Construction of NiCo_(2)O_(4) nanoflake arrays on cellulose-derived carbon nanofibers as a freestanding electrode for high-performance supercapacitors

作     者：Xuepeng Ni Kunming Li Changlei Li Qianqian Wu Chenglin Liu Huifang Chen Qilin Wu Anqi Ju Xuepeng Ni;Kunming Li;Changlei Li;Qianqian Wu;Chenglin Liu;Huifang Chen;Qilin Wu;Anqi Ju

作者机构：College of Materials Science and Engineering&State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsDonghua UniversityShanghai 201620China Key Laboratory of High-Performance Fibers&ProductsMinistry of EducationDonghua UniversityShanghai 201620China Weifang Xinlong Biomaterial Co.Ltd.Weifang 261000China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2023年第17卷第6期

页      面：691-703页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by Key Support Project of State Key Laboratory for Modification of Chemical Fibers and Polymer Materials(Grant No.21M1060212) Open Project of Shanghai Key Laboratory of Lightweight Structural Composite Materials(Grant No.2232019A4-02) National Natural Science Foundation of China(Grant No.51503086) the Fundamental Research Funds for the Central Universities and Graduate Student Innovation Fund of Donghua University(Grant No.CUSF-DH-D-2022013) 

主　　题：cellulose carbon nanofibers NiCo_(2)O_(4) supercapacitors 

摘      要：Cellulose has a wide range of applications in many fields due to their naturally degradable and low-cost characteristics,but few studies can achieve cellulose-nanofibers by conventional ***,we demonstrate that the freestanding cellulose-based carbon nanofibers are successfully obtained by a special design of electrospinning firstly,pre-oxidation and high-temperature carbonization(1600℃),which display a superior electrical conductivity of 31.2 S·cm^(-1)and larger specific surface area of 35.61 m^(2)·g^(-1)than that of the polyacrylonitrile-based carbon nanofibers(electrical conductivity of 18.5 S·cm^(-1),specific surface area of 12 m^(2)·g^(-1).The NiCo_(2)O_(4)nanoflake arrays are grown uniformly on the cellulose-based carbon nanofibers successfully by a facile one-step solvothermal and calcination *** as-prepared cellulose-based carbon nanofibers/NiCo_(2)O_(4)nanoflake arrays are directly used as electrodes to achieve a high specific capacitance of 1010 F·g^(-1)at 1 A·g^(-1)and a good cycling stability with 90.84%capacitance retention after 3000 times at 10 A·g^(-1).Furthermore,the all-solid-state symmetric supercapacitors assembled from the cellulose-based carbon nanofibers/NiCo_(2)O_(4)deliver a high energy density of 62 W·h·kg(-1) at a power density of 1200 W·kg^(-1).Six all-solid-state symmetric supercapacitors in series can also power a‘DHU’logo consisted of 36 light emitting diodes,confirming that the cellulose-based carbon nanofiber is a promising carbon matrix material for energy storage devices.